International Journal of Advance Agricultural Research
ISSN: 2053-1265
Vol. 4(1), pp. 1-5, January 2016

Indole3-butyric acid induced rooting characteristics in Indian soap nut tree: Evaluation using sprouting value index concept

*Justin R. Nayagam

Department of Botany, Union Christian College, Aluva, Kerala, India, 683102. (Affiliated to Mahatma Gandhi University, Kottayam) Kerala, South India.

*To whom correspondence should be addressed. E-mail:

Received 09 December, 2015; Received in revised form 18 January, 2016; Accepted 25 January, 2016.


Stem cuttings, Sprouting value index, Sapindus trifoliatus, Rooting media.

Rooting ability in Indole3-butyric acid (IBA) induced stem cuttings in vegetative regeneration experiments largely depends on various parameters, which has been established using sprouting value index (SVI), a mathematical approach. Indian soap nut tree, Sapindus trifoliatus is a medicinal and avenue tree species of tropical India that is known to have poor regeneration through seeds and hence in the present study stem cuttings of saplings were used to generate clonal plant propagules. Field studies were carried out using three rooting medium at a location in Central Kerala, Peninsular India, for one year at four months regular interval. Three IBA concentrations (300, 500 and 1000 ppm IBA) were used and the data obtained was evaluated with SVI method in order to evaluate the suitable medium, which gives maximum results. The control cuttings recorded no rooting. The results obtained indicate high SVI, when stem root cuttings were planted in root trainers with coir pith compost; for all three concentrations of IBA applied. Sprouting percentage was increased and the delay in completion of sprouting/rooting initiation decreased when IBA treatment was used.

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